INCORRECT REAR AXLE RATIO (REPLACE AXLE ASSEMBLY). Chevrolet Caprice 1993

TO: THE FOLLOWING NON-DEALER RECIPIENTS:

BRANCH MANAGERS MARKETING CENTER MANAGERS DEALER ASSISTANCE CENTER MANAGERS TECHNICAL ASSISTANCE NETWORK MANAGERS - W.A. OAKES & P.A. RONDEAU CUSTOMER ASSISTANCE CENTER MANAGERS - D.M. ELLINGHAM & J.S. WILLIAMS FLEET SERVICE MANAGERS SERVICE SYSTEM MANAGER - J.J. DOWNING BRANCH SERVICE MANAGERS BRANCH CUSTOMER ASSISTANCE MANAGERS ACCOUNT MANAGERS - SERVICE

ORIGINATING DEPARTMENT: DEALER OPERATIONS

CONTACT PERSON: BOB TREPPA, ADMINISTRATOR PRODUCT CAMPAIGNS, 8-227-6595

REVISION TO:

ADMIN TYPE: S

ADMINISTRATIVE MESSAGE 02-486 CREATED ON 10/28/92 AT Page 1 OF 7

SUBJECT:INCORRECT REAR AXLE RATIO

TO: SELECT CHEVROLET DEALERS

********************************************** * IMPORTANT: CAMPAIGN 93C03 * * RETAIN THIS DCS ADMINISTRATIVE MESSAGE * * WITH DEALER CAMPAIGN BULLETINS. A DEALER * * BULLETIN WILL NOT BE PRINTED BY CHEVROLET * * MOTOR DIVISION. . * **********************************************

MODEL & YEAR: 1993 CHEVROLET CAPRICE LTZ MODEL

DEFECT INVOLVED

GENERAL MOTORS HAS DETERMINED THAT CERTAIN 1993 CHEVROLET CAPRICE LTZ MODEL VEHICLES EQUIPPED WITH THE GU4 (3.08) REAR AXLE CONTAINED AN INCORRECT AXLE RATIO. THE VEHICLES WITH THESE INCORRECT AXLE RATIOS WILL AFFECT FUEL ECONOMY AND ACCURACY OF SPEEDOMETER READINGS.

TO PREVENT THE POSSIBILITY OF THESE CONDITIONS OCCURRING, DEALERS ARE TO REPLACE THE AXLE ASSEMBLY.

INVOLVED VEHICLES

INVOLVED ARE CERTAIN 1993 CHEVROLET CAPRICE LTZ MODEL VEHICLES WITH THE GU4 REAR AXLE BUILT WITHIN THE FOLLOWING VIN BREAKPOINTS:

PLANT YEAR MODEL PLANT CODE FROM THROUGH

1993 CAPRICE WILLOW RUN "W" PW100016 PW102646

INVOLVED VEHICLES HAVE BEEN IDENTIFIED BY VEHICLE IDENTIFICATION NUMBER COMPUTER LISTINGS. COMPUTER LISTINGS CONTAIN THE COMPLETE VEHICLE IDENTIFICATION NUMBER, OWNER NAME AND ADDRESS DATA, AND ARE FURNISHED TO INVOLVED DEALERS WITH THE CAMPAIGN DCS/BULLETIN. OWNER NAME AND ADDRESS DATA FURNISHED WILL ENABLE DEALERS TO FOLLOW-UP WITH OWNERS INVOLVED IN THIS CAMPAIGN.

THESE LISTINGS MAY CONTAIN OWNER NAMES AND ADDRESS OBTAINED FROM STATE MOTOR VEHICLE REGISTRATION RECORDS. THE USE OF SUCH MOTOR VEHICLE REGISTRATION DATA FOR ANY OTHER PURPOSE IS A VIOLATION OF LAW IN SEVERAL STATES. ACCORDINGLY, YOU ARE URGED TO LIMIT THE USE OF THIS LISTING TO THE FOLLOW-UP NECESSARY TO COMPLETE THIS-CAMPAIGN. DEALER WHO DO NOT HAVE INVOLVED VEHICLES WILL NOT RECEIVE A COMPUTER LISTING.

SEE DEALER CODE AND VIN LISTING THAT BEGINS ON PAGE 7 OF THIS DCS/BULLETIN SUPPLEMENT.

OWNER NOTIFICATION

OWNERS WILL BE NOTIFIED OF THIS CAMPAIGN ON THEIR VEHICLES BY CHEVROLET MOTOR DIVISION (SEE COPY OF OWNER LETTER INCLUDED WITH THIS BULLETIN). DEALER CAMPAIGN RESPONSIBILITY

ALL UNSOLD NEW VEHICLES IN DEALERS POSSESSION AND SUBJECT TO THIS CAMPAIGN MUST BE HELD AND CORRECTED PER THE SERVICE PROCEDURE OF THIS CAMPAIGN DCS/BULLETIN BEFORE OWNERS TAKE POSSESSION OF THESE VEHICLES.

DEALERS ARE TO SERVICE ALL VEHICLES SUBJECT TO THIS CAMPAIGN AT NO CHARGE TO OWNERS, REGARDLESS OF MILEAGE, AGE OF VEHICLE, OR OWNERSHIP, FROM THIS TIME FORWARD.

OWNERS OF VEHICLES RECENTLY SOLD FROM YOUR NEW VEHICLE INVENTORY AND ARE NOT LISTED IN THE SOLD VIN SECTION OF THIS MESSAGE ARE TO BE CONTACTED BY THE DEALER, AND ARRANGEMENTS MADE TO MAKE THIS REQUIRED CORRECTION ACCORDING TO INSTRUCTIONS CONTAINED IN THIS BULLETIN.

IN SUMMARY, WHENEVER A VEHICLE SUBJECT TO THIS CAMPAIGN ENTERS YOUR VEHICLE INVENTORY, OR IS IN YOUR DEALERSHIP FOR SERVICE IN THE FUTURE, PLEASE TAKE THE STEPS NECESSARY TO BE SURE THE CAMPAIGN CORRECTION HAS BEEN MADE BEFORE SELLING OR RELEASING THE VEHICLE.

PART INFORMATION

WHILE THE RING AND PINION GEAR SET IS THE CAUSE OF THIS INCORRECT AXLE RATIO CONDITION, TO ENSURE CUSTOMER SATISFACTION, DEALERS ARE TO REPLACE THE COMPLETE AXLE ASSEMBLY.

AXLE ASSEMBLIES REQUIRED TO COMPLETE THIS CAMPAIGN WILL BE PROVIDED BY CHEVROLET. DEALERS ARE TO CONTACT THE CHEVROLET TECHNICAL ASSISTANCE NETWORK (TAN) AT 1-800-227-3175 IN ORDER TO OBTAIN AN EXCHANGE UNIT. AT THE COMPUTER VOICE PROMPT SELECT FOR THE TRANSMISSION SERVICE MANUAL BULLETIN SPLIT. TAN WILL ARRANGE FOR AN EXCHANGE AXLE ASSEMBLY TO BE SHIPPED DIRECTLY TO YOUR DEALERSHIP.

QUANTITY PART NUMBER DESCRIPTION VEHICLE

26040097 REAR AXLE ASSEMBLY 1

1052271 DIFFERENTIAL LUBRICANT 3.5 PTS

1052358 LIMITED SLIP DIFFERENTIAL 4 OZ ADDITIVE LUBRICANT

SERVICE PROCEDURE

REFER TO SECTION 4 AND SECTION 5 OF THE 1993 CAPRICE SERVICE MANUAL FOR THE REMOVAL AND INSTALLATION OF THE REAR AXLE AND PARKING BRAKES RELATED COMPONENTS.

NOTICE: THE AXLE ASSEMBLY IS SHIPPED WITH THE PARKING BRAKE CABLES ALREADY ATTACHED TO THE REAR BRAKES.

THEREFORE, IT WILL NOT BE NECESSARY TO REMOVE THE BRAKE DRUMS AND ALL RELATED COMPONENTS.

ONLY THE PARKING BRAKE CABLES AT THE EQUALIZER, ABS SPEED SENSOR, AND REAR BRAKE PIPES HAVE TO BE REMOVED FROM THE AXLE HOUSING AND REINSTALLED.

IMPORTANT: FILL REAR AXLE WITH DIFFERENTIAL LUBRICANT AND ADDITIVE PER SERVICE MANUAL.

REAR BRAKES WILL HAVE TO BE BLED AFTER REINSTALLING BRAKE PIPES.

INSTALL CAMPAIGN IDENTIFICATION LABEL.

CAMPAIGN IDENTIFICATION LABEL

EACH VEHICLE CORRECTED IN ACCORDANCE WITH THE INSTRUCTION OUTLINED IN THIS PRODUCT CAMPAIGN DCS/BULLETIN WILL REQUIRE A "CAMPAIGN IDENTIFICATION LABEL." EACH LABEL PROVIDES A SPACE TO INCLUDE THE CAMPAIGN NUMBER AND THE FIVE (5) DIGIT DEALER CODE OF THE DEALER PERFORMING THE CAMPAIGN SERVICE. THIS INFORMATION MAY BE INSERTED WITH A TYPEWRITER OR A BALL POINT PEN.

EACH "CAMPAIGN IDENTIFICATION LABEL" IS TO BE LOCATED ON THE RADIATOR CORE SUPPORT IN AN AREA WHICH WILL BE VISIBLE WHEN THE VEHICLE IS BROUGHT IN FOR PERIODIC SERVICING BY THE OWNER. ADDITIONAL "CAMPAIGN IDENTIFICATION LABELS" CAN BE OBTAINED FROM DAC.

APPLY "CAMPAIGN IDENTIFICATION LABEL" ONLY ON A CLEAN, DRY SURFACE.

RETURN PROCEDURE FOR REMOVED AXLE ASSEMBLY

1. DRAIN ALL FLUID FROM REMOVED AXLE ASSEMBLY.

2. SECURE REMOVED AXLE ASSEMBLY ON ORIGINAL SHIPPING PALLET.

3. COIL AND TIE DOWN PARKING BRAKE CABLE SIMILAR TO THE EXCHANGE AXLE ASSEMBLY WHEN SHIPPED.

4. FILL IN THE INFORMATION REQUESTED ON THE SHIPPING TAG.

5. ATTACH SHIPPING TAG TO THE AXLE ASSEMBLY.

6. CONTACT THE PREFERRED FREIGHT CARRIER LISTED BELOW FOR YOUR REGION:

REGION CARRIER NAME

EAST / SOUTH ROADWAY

MIDWEST CENTRAL

WEST / SOUTHWEST YELLOW FREIGHT

NOTE: THE EXCHANGE AXLE ASSEMBLY WAS SHIPPED TO YOUR DEALERSHIP PREPAID.

RETURN THE REMOVED AXLE ASSEMBLY SHIP COLLECT.

7. RETURN AXLE ASSEMBLY TO: SAGINAW DETROIT AXLE PLANT PLANT 52 - CENTRAL RECEIVING 1840 HOLBROOK AVE. DETROIT, MI 48212 ATTN: ROD MAKOWSKI

CLAIM INFORMATION

REPAIR PC FAILED PART LBR LBR PART NO. ALLOW CC/FC OP HRS OTH

R&R AXLE ASSEMBLY - --- --- SK/00 V7720 1.6 .5

SUBMIT A PRODUCT CAMPAIGN CLAIM WITH THE INFORMATION BELOW:

*DEALERSHIPS WILL RECEIVE 0.1 HOURS CREDIT FOR ADMINISTRATIVE SERVICES ASSOCIATED WITH THIS CAMPAIGN IN ADDITION TO .4 HRS CREDIT FOR PACKAGING THE AXLE ASSEMBLY FOR RETURN. THE 0.5 HOURS TOTAL ALLOWANCE IS TO BE ENTERED IN THE "OTHER LABOR HOURS" FIELD. THIS ENTRY WILL NOT REQUIRE AUTHORIZATION.

COMPLAINT CODE "SK" AND FAILURE CODE "00" MUST BE USED WITH THE LABOR OPERATION.

**THE REPLACEMENT OF THE COMPLETE AXLE ASSEMBLY IS DUE TO INCORRECT RING AND PINION RATIO, THEREFORE, THE 30% DEALER NET WILL BE APPLIED TO THE COST OF THE RING AND PINION SET. THIS ALLOWANCE PLUS FLUID AND ADDITIVE WILL APPEAR IN THE NET AMOUNT.

REFER TO THE CLAIMS PROCESSING MANUAL FOR DETAILS ON PRODUCT CAMPAIGN CLAIM SUBMISSION.

OWNERS' LETTER

DEAR CAPRICE OWNER:

REASON FOR THIS RECALL

WHAT WE WILL DO

TO PREVENT THE POSSIBILITY OF THESE CONDITIONS OCCURRING, YOUR CHEVROLET DEALER WILL REPLACE THE SUSPECT AXLE ASSEMBLY WITH A NEW COMPLETE ASSEMBLY.

WHAT YOU SHOULD DO

PLEASE CONTACT YOUR CHEVROLET DEALER AS SOON AS POSSIBLE TO ARRANGE A SERVICE DATE AND SO THE DEALER MAY ORDER THE NECESSARY PART TO PERFORM THIS SERVICE. INSTRUCTIONS FOR MAKING THIS CORRECTION HAVE BEEN SENT TO YOUR DEALER AND PARTS ARE AVAILABLE. THE LABOR TIME NECESSARY TO PERFORM THIS SERVICE CORRECTION IS APPROXIMATELY ONE AND ONE HALF HOUR. PLEASE ASK YOUR DEALER IF YOU WISH TO KNOW HOW MUCH ADDITIONAL TIME WILL BE NEEDED TO SCHEDULE AND PROCESS YOUR VEHICLE.

YOUR CHEVROLET DEALER IS BEST EQUIPPED TO OBTAIN PARTS AND PROVIDE SERVICE TO ENSURE THAT YOUR VEHICLE IS CORRECTED AS PROMPTLY AS POSSIBLE. IF, HOWEVER, YOU TAKE YOUR VEHICLE TO YOUR DEALER ON THE AGREED SERVICE DATE, AND THEY DO NOT REMEDY THIS CONDITION ON THAT DATE OR WITHIN FIVE (5) DAYS, WE RECOMMEND YOU CONTACT THE CHEVROLET CUSTOMER ASSISTANCE CENTER BY CALLING 1-800-222-1020.

AFTER CONTACTING YOUR DEALER AND THE CUSTOMER ASSISTANCE CENTER, IF YOU ARE STILL NOT SATISFIED THAT WE HAVE DONE OUR BEST TO REMEDY THIS CONDITION WITHOUT CHARGE AND WITHIN A REASONABLE TIME, YOU MAY WISH TO WRITE THE ADMINISTRATOR, NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, 400 SEVENTH STREET, S.W., WASHINGTON, D.C. 20590 OR CALL 1-800-424-9393 (WASHINGTON D.C. RESIDENTS USE 366-0123).

THE ENCLOSED OWNER REPLY CARD IDENTIFIES YOUR VEHICLE. PRESENTATION OF THIS CARD TO YOUR DEALER WILL ASSIST IN MAKING THE NECESSARY CORRECTION IN THE SHORTEST POSSIBLE TIME. IF YOU HAVE SOLD OR TRADED YOUR VEHICLE, PLEASE LET US KNOW BY COMPLETING THE POSTAGE PAID REPLY CARD AND RETURNING IT TO US.

WE ARE SORRY TO CAUSE YOU THIS INCONVENIENCE; HOWEVER, WE HAVE TAKEN THIS ACTION IN THE INTEREST OF YOUR CONTINUED SATISFACTION WITH OUR PRODUCTS.

EDWARD JOHNSON MANAGER - DEALER OPERATIONS

ENCLOSURE

MODEL & YEAR 1992 CHEVROLET CAPRICE LTZ MODEL DEALERS AND VIN LISTING

DLR VIN DLR VIN

02076 lGlBN5370PW100096 16219 lGlBN537XPW101840 02334 lGlBN5371PW101483 16500 lGlBN5370PW102155 05384 1GIBN5375PW101891 17566 lGlBN537XPW101546 05384 IGIBN5377PW101715 19083 lGlBN537XPW101191 07273 1GIBN5373PWI02179 20390 lGlBN5379PW101473 08276 1GIBN5375PWI01082 26019 lGlBN5376PW101883 08423 lGlBN5371PW101595 26480 lGlBN5379PWI00646 11280 lGlBN5379PW101747 32663 lGlBN5379PW101537 11616 1GIBN5379PW102011 48043 1GIBN5377PW101746 16000 lGlBN5372PW102125 48225 lGlBN5377PW101519 16217 lGlBN5378PW100153 48314 lGlBN5377PW101455

THE FOLLOWING UNITS ARE, ALREADY REPORTED SOLD AND OWNERS WILL BE RECEIVING THE CUSTOMARY OWNER CAMPAIGN LETTER. DEALERS SHOULD CONTACT THESE OWNERS AND ESTABLISH A MUTALLY AGREEABLE DATE TO PERFORM THIS CAMPAIGN, CONSIDERING THE PARTS FOR THIS RECALL ARE TO BE OBTAINED ON AN EXCHANGE BASIS. COORDINATING THE PARTS ARRIVAL TO THE SCHEDULED SERVICE DATE IS ESSENTIAL TO GAIN MAXIMUM CUSTOMER SATISFACTION.

DLR VIN DLR VIN

02232 lGlBN5370PW100213 11486 lGlBN5373PWI00240 02462 lGlBN5373PW101744 11486 lGlBN5374PW100375 06111 1GIBN5371PW100947 11486 1GIBN5374PW101168 08162 1GIBN5373PW101761 11486 1GIBN5375PW101907 09367 lGlBN5378PW101996 11486 lGlBN5376PW101284 11486 lGlBN537XPW100428 14327 lGlBN5371PWI00656 11486 lGlBN537XPWI01644 14400 lGlBN5374PW101638 11486 lGlBN5370PW100969 16244 1GIBN5378PW100055 11486 lGlBN5370PW101037 17043 lGlBN5378PW100041 11486 lGlBN5370PW101314 17371 lGlBN5375PWI01745 11486 lGlBN5372PW101122 48226 lGlBN5375PWI01518

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.